I am an expert by no means, but I will share the method I use.
I free-range my birds in a 14' X 30' 'hoophouse' that I call my 'Chicken Quonset Hut". When I introduce new members to the flock I have a 10' x 12' 'pen' that I put inside the hoophouse. The new chickens are kept in this for 14...